Electric-lamp socket.



PATENTED JUNE 11, 1907.

J. AMON.

ELECTRIC LAMP SOCKET.

APPLICATION FILED MAR. 1, 1906.

' 2 SHEETS-SHEET 1. 59,2 2

III IIIIIIIIIINIIIII" PAI'ENTED- JUNE 11, 1907.

J. AMON.

ELECTRIC LAMP SOCKET.

APPLICATION TILED M43. 1, 1906.

2 SHEETS-SHEET 2.

ITNESSEES:

JOSEPH AMON, or NEW YORK, N. Y.

PATENT OFFICE.

ELECTRIC-LAMP SOCKET.

Specification of Letters Patent.

Patented June 1 1, 1907.

Application filed March 1, 1906. Serial No. 303,599.

Manhattan, in the city, county, and State erel m cha i of New York, have invented certain Improvements in Electric-Lamp Sockets, of

which'the following is a specification. Y

My invention has relation to sockets for electric lamps, and the objects of my invention-are: first, to produce a socket which may be easily and quickly installed; second, to secure the contactplates in the socket without screwsand to so'construct and arrange the contact plates thereinthat electrical and metallic contact with the conducting wire smay be easily and securely made; third, to simplify the form of the sevarts composing the socket referred to in or er to effect an-economizing of time and labor in the manufacture of the whole appliance; and fourth, to so construct and adapt" the insulating support of the socket as to make the socket suitable for enera as ell a decorative n m na ins g imp e T e invention consists in the improved socket for electric lamps which will be fully described hereinafter and finally pointed out in the a ms improved electric lamp socket is illustrated in the accompanying drawings, in which. i

Figure 1 epres n a vert c l Section of the lame-s k t with t e clamping-Plat and screw-nut de ached t I f mQ g- 2 1S a ieel se ion of. the ame kin of I'a I P- e PrQYided w th bin ing-s re and an. in lasing-eap Qr easing, ig 3 i a r al tr ns- Y'e'ree "sectio t e l mpso wi h a SWiFCh: mi henism appl ed thereto, Figs 4;

and. 5 are verti a an r e ti 's taken a r ght an les t the plan f he ection ehown'inFi'a 3 and, howi g d a s o e Sean mechanism, F gs- 7 an 8 illu trate difiere it con truc ions king el ccan connec io s th he w h h nism; Fig- 9, represents a sect on a t pr iew ef theinsn atiiles pp rt i a Planview o the. base. of he support. F g 1 i a snav'ew at top-view of the clamp ngnae. and Fi a- .2 la .8 d tail 9 the was pert in-sa a m Impr ed lam sqeketi Sim lar letters of eferen indicate one s eedierwe i t e different fi ur -s of: h eaae The electric-lamp socket shown in Fig. 1 is composed of the following partsthat is, a support 1 of insulating material, contact plates 2 and 3, a screw 4, a clamping plate 5 and the nuts 6 and 7.

The insulating support illustrated in Figs. 9-10 has within a thread 8 adapted to the base of any of the standardlamps; the thread 8 again. has a channel 9 to permit the passage of contact spring 2, shown in detail in Fig. 13; extending through the lower portion ofthe insulating support are perforations 1O 10, Fig. 9; the contact plates 2 and 3 are placed in these perforations and are by which is to prevent a turning of the screw.

Screw 4 is permanently fastened in the support and held in place by means of nut 7. To prevent electrical connection of the contact plates 2 and 3' I provide elevation 13 at the outer surface of the base of the insulating support. The lower exterior circumference o the insulating support has a thread 14 Fig. 9, upon which casing 15 Fig. 2 is screwed for the protection of the contact lates; said casing being provided with an interior thread adapted to that pur ose.

The-electrical connections of t e lamp socket represented in Fig. with the conducting wires are produced by sim le mechanical pressure by means of c amping plate 5 represented in detail in Fig. 11. This clam ing plate is also made of insulating inateria' and has two elevations 16 Figs. Land 11 each of which is provided with a recess into which the conducting wires are placed when socket is installed. These recesses are of obtu -angl d rm to p e nt the ondu r 'f m fall ng out or ng d pla ed- In. the c ter clampi g p at ha a role 17; o perm the pa ge of crew bo t by mans, of nu 6 lamping Plate 5 is f rced dg he ame kind o nta p at s as r pre- 1 sente 'in Fig 1 s hown, except that I em- IiiFig- 2 he i ntical ki d of socket with roo loy binding screws 18 in this form of socket or the purpose of making electrical contact, and for the protection of the contact plates I use a casing 15 interiorly threaded and screwed upon the exterior thread 14 at the lower portion of the insulating support. This form of my socket illustrates how the same may be used for eneral purposes.

'The construction 0 my socket may be adapted for use in connection with a key or switch mechanism. Figs. 34'---5 illustrate =my socket provided with a switch mechanism. It is evident that the manner of constructing the said mechanism may vary considerably and I do not make any specific claim upon the key shown herein.

As clearly shown in Fig. 3 the characteristic elements of the socket herein before described have been entirely retained therein.

The socket illustrated in Fig. 3 is composed.

of the following arts, viz., the insulating support 19' provi ed for the purpose of receiving the switch mechanism with a chamber 20, and likewise having within a thread 8, and an exterior thread 14, the metal con tact plates 21 and 22 with the binding screws 18, a keycontactbreaker hereinafter described and a casing 15.

The key-contact-breaker is illustrated in detail in Figs. 1617---'18. Referring thereto.23 is the axle or rod, and 24 the hub-handle attached thereto, 25 the insulating part shown in Fig. 17, the contact part 26 loosely carried thereon; the insulating part 25 is provided at one end with a recess 27 to permit screw 28 to be secured to rod 23. Screw 28 holds the entire switch mechanism in place. The circuit is established and broken by means of contact springs 29 and 39 pressing firmly against the insulating part 25. (ontact spring 29 is secured to contact plate 22 by means of rivet 31; said contact plate 22 has a perforation 43 for the passage and support of rod 23: contact spring29 is secured by means of rivet 31 to contact plate 30, which establishes the electrical connection with the base of the lamp. The adjustment of the switch mechanism described is very simple, the more so as an exact fitting of its several parts to one another is not absolutely essential.

In Figs. 6, 7 and 8 are shown different means of making electrical contact of the sockettherein shown with the conductors, the same being effected by simple mechanical pressure.

' Fig. 6 shows the manner of making contact with an ordinary conductor. The bare or bared conducting wires 45 are placed upon the contact plates 2 and 3, after which clamping plate 5 is by means of nut 6 forced down, until a good contact has been established. The obtuse-angled form of recesses onelevations 16 prevents the conductors from falling out.

Fig. 7 illustrates the method of making electrical connection with an'insulated cable wire, which is likewiseproduced by simple mechanical pressure. In this case I employ a metal piece 36 adapted to that purpose and shown in Fig. 14 in perspective. This metal piece is provided with a sharp point 37 and both its ends are turned down. Metal piece 36 is pressed forcibly into the cable wire 39, Fig. 7 in such a manner that point 37 establishes electrical contact with the cable wire. After this manipulation contact with the lamp is effected by placing contact plates 2 and 3 into metal pieces 36, the down-turned ends thereof preventing a sideward displacement. After this operation clamping plate 5 is forced down by means of nut 6, till a good I contact is established.

Fig. 8 shows another method of making contact with an insulated .cable wire; in which'I employ however instead of metal piece 36 a-sharp metallic pointed device 40,

firmly secured to contact plates 2 and 3. The

pointed device 40, a perspective view of which is shown in Fig. 15, may be either of conical or of pyramidal form, and is firmlysecured to contact plates 2 and 3 either by means of a screw thread 41 or as illustrated in Fig. 8 right side by means of a rivet 42. The electrical contact is established in the same manner as described before, that is, by simple mechanical pressure.

I am aware that prior to my invention lamp sockets with pointed devices to establish electrical contact have been made. So far as I know in all these inventions a screw driver or such similar article is required to make contact and the pointed devices are movable in the socket, while in my socket -t he contact is etl'eeted by a single manipulation, namely the forcing down of the clamping plate against the insulating support, thereby pressing the fixed metallic points into the conductor wires, avoiding the use of a screw driver and effecting a considerable saving of time and labor in the installation of the appliance.

What I do claim and desire to secure by Letters Patent, is-- 1. In an electric lamp-sm-ket, the combination of a support of insulating material having an interior thread to receive the base of an electric lamp, perforations extending through the base of the support, contactplates secured thereinand bent over the base of the support at their inner and outer ends, a clam )ing-plate of insulating material provide with raised portionsfand means for holding said clan'iping-plate on the base of the support for supporting the conductors in contact with the contact-plates.

2. In an electric lamp-socket, the combination of a support of insulating material having an interior screw-thread adapted toreceive the base of an electric lamp, said sup- ICC port being provided in its base with perforations, contact-plates secured into said perforations and provided with bent-over contactsurfaces at their inner and outer ends, a raised portion at the outer surface of the base for separating the outer ends of the contactplates from each other, a clamping-plate of insulating material .provided with raised portions, and means for clamping the conducting-wires interposed between the contactplates and the raised portions of the clamping-plate firmly in positionon the support.

3. In an electric lamp-socket, the combination of a support'of insulating material having an interior thread adapted to receive the base of an electric lamp and having a grooved channel at one side of the thread,

perforations and a central hole in said base, contact-plates secured in the perforations in the base, one of the contact-plates being seated in said side-groove of the interior thread, an elevation on the base of the support for separating the outerends of the contact-plates, a screw-post seated in the central hole of the base, a clamping-plate of insulating material provided wit raised portions for holding the conductingwires, and a screw-nut applied to the end of the-screwpost for holding the clamping-plate in posi-. I

having an interior screw-thread adapted to receive the base of an electric lamp, the base of the support being provided with perforations and a central shouldered hole, contactplates inserted in the perforations of the base, araised portion on the outer surface of the base for separating the contact-plates, a screw-post secured in said shouldered hole, a clamping-plate of insulating material provided with a central opening for the screwpost and raised portions obtusely recessed at their faces, and a screw-nut for holdin the conductors and the clamping-plate firm y on the base of the support.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing Witnesses.

JOSEPH AMON.

Witnesses:

JOSEPH BREWSTER, ELIZABETH A. PETERS. 

